Sha256: bf2b190db5b6b278d294f37ae09e68f7b293ca716369c6624797fbbd1cfd4365
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Size: 1.77 KB
Versions: 9
Compression:
Stored size: 1.77 KB
Contents
# -*- coding: utf-8 -*-
#
# helper.rb
#
# Convert to US_ASCII encoding if ascii characters only.
def convert_to_ascii_if_ascii(str)
return nil if str.nil?
ruby_18 do
unless str =~ /[^!"#\$%&'\(\)\*\+,\-\.\/\:\;<=>\?@0-9A-Za-z_\[\\\]\{\}^` ~\0\n]/
str = String.new(str)
end
end ||
ruby_19 do
if str.ascii_only?
str = [str].pack('a*')
end
end
str
end
private :convert_to_ascii_if_ascii
def utf16be_to_16le(utf16be)
utf16be.unpack('n*').pack('v*')
end
def utf8_to_16be(utf8)
ruby_18 { NKF.nkf('-w16B0 -m0 -W', utf8) } ||
ruby_19 do
utf16be = utf8.encode('UTF-16BE')
utf16be.force_encoding('UTF-16BE')
end
end
private :utf8_to_16be
def utf8_to_16le(utf8)
ruby_18 { NKF.nkf('-w16L0 -m0 -W', utf8) } ||
ruby_19 do
utf16le = utf8.encode('UTF-16LE')
utf16le.force_encoding('UTF-16LE')
end
end
private :utf8_to_16le
def ascii_to_16be(ascii)
ascii.unpack("C*").pack("n*")
ruby_19 { ascii.force_encoding('UTF-16BE') }
ascii
end
private :ascii_to_16be
def store_simple(record, length, *args)
header = [record, length].pack('vv')
data = args.collect { |arg| [arg].pack('v') }.join('')
append(header, data)
end
private :store_simple
# Convert base26 column string to a number.
# All your Base are belong to us.
def chars_to_col(chars)
expn = 0
col = 0
while (!chars.empty?)
char = chars.pop # LS char first
col += (char.ord - "A".ord + 1) * (26 ** expn)
expn += 1
end
col
end
private :chars_to_col
NonAscii = /[^!"#\$%&'\(\)\*\+,\-\.\/\:\;<=>\?@0-9A-Za-z_\[\\\]\{\}^` ~\0\n]/
def is_utf8?(str)
ruby_18 { str =~ NonAscii } ||
ruby_19 { str.encoding == Encoding::UTF_8 }
end
Version data entries
9 entries across 9 versions & 1 rubygems